Refined extraction and separation method of China hemp fibers

Abstract

The invention discloses a refined extraction and separation method of China-hemp fibers. The method comprises the following steps that China-hemp is socked, the China-hemp discharged from a roller press is neatly placed in a net, the China-hemp is socked in a soaking tank together, an alkaline solution with the pH value controlled to be 7-11 is contained in the soaking tank, and soaking time is 6 minutes to 12 minutes; firstly, the soaked China-hemp is transferred into another tank filled with normal-temperature clear water, the China-hemp is subjected to rinsing for 1 minute-3 minutes, then the China-hemp is taken out, spraying is conducted again to remove residual liquid, the washed China-hemp is transferred to double rollers for dehydration, then the China-hemp is conveyed to a wet opener to be opened or a kneading machine to be subjected to a kneading operation, the kneading operation is that the washed China-hemp is directly put into the wet opener or the kneading machine to be kneaded, and then the China-hemp can be used; and the China-hemp is cooked, the temperature is controlled to be 50 DEG C-60 DEG C, and then the China-hemp is subjected to microwave treatment, ultrasonic degumming treatment, neutralization, water washing and drying treatment. According to the refined extraction and separation method of the China hemp fibers, the optimal degumming condition is met, the force required for degumming is effectively reduced, and the optimal degumming effect is achieved.

Description

technical field [0001] The invention relates to the field of hemp extraction and separation methods, in particular to a refined extraction and separation method for hemp fibers. Background technique [0002] Degumming is the key process of hemp fiber formation, which has a great influence on fiber performance and hemp yarn quality. The traditional hemp degumming process generally adopts mechanical, chemical, and biological enzyme methods. Mechanical (dew or water return) degumming depends on the weather and makes the performance of the hemp fiber unstable; chemical degumming requires a lot of water and chemicals and is not friendly to the environment. ; Biological enzymatic degumming is still difficult in commercial application due to the difference in enzyme activity. Therefore, it is urgent to explore a process route with less pollution, low energy consumption, high cost performance, which can greatly improve the fineness and cleanliness of fibers and reduce "hemp grains"...

AI Technical Summary

Problems solved by technology

The traditional hemp degumming process generally adopts mechanical, chemical, and biological enzyme methods. Mechanical (dew or water return) degumming depends on the weather and makes the performance of the hemp fiber unstable; chemical degumming requires a lot of water and chemicals and is not friendly to the environment. ; Biological enzymatic degumming is still difficult in commercial application due to the difference in enzyme activity

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